. If you wanted to stay in that hotel you __ booked before! could have might have should have 2. He __ committed the crime, as he had both the motive and the opportunity. can't have could have would have 3. If I had known about your accident, I __ phoned you. may have should have would have Incorrect 4. Lucy __ attended the concert, but we aren't sure. can't have may have should have